Владислав

SUMMARY
Vladislav Frontend-focused Software Engineer with 4+ years of commercial experience
Fyklev building scalable web applications with React, Next.js, and TypeScript.
Specialized in modern frontend architecture and UI performance for large-
SENIOR FRONTEND
scale marketplace platforms, with hands-on commercial experience extending
ENGINEER NestJS REST APIs, implementing business logic, and integrating third-party
services across fintech and e-commerce. Comfortable working across the full
Dnipro, Ukraine stack, with frontend as the primary focus.

[відкрити контакти](див. вище в блоці «контактна інформація») EXPERIENCE
[відкрити контакти](див. вище в блоці «контактна інформація») Fullstack Developer · Aventus IT Jul 2026 — Present
[відкрити контакти](див. вище в блоці «контактна інформація») • Leading frontend development of GGChest, a gaming-goods marketplace, on a
Next.js monorepo (Turborepo, pnpm workspaces) using Feature-Sliced Design —
product catalog, checkout, personal account with 2FA, and a shared UI library in
SKILLS Storybook (Next.js 15, React 19, TypeScript, Sass, i18next; Jest/Playwright).
• Building a cross-platform mobile app in React Native, sharing business logic with
LANGUAGES
the web platform for a native iOS/Android experience.
JavaScript TypeScript • Developing and maintaining a REST API in NestJS / TypeScript / Prisma /
HTML5 CSS3 PostgreSQL — implementing feature modules, validation, rate limiting, structured
logging, and Swagger docs.
FRONTEND • Implemented dual-flow authentication (email/password and Firebase ID token),
React.js Next.js issuing JWT access/refresh token pairs with rotation and reuse detection.
• Integrated Sumsub for KYC verification, including webhook processing and
React Native Redux Toolkit verification status handling.
React Query MUI • Integrated Crossmint for EVM wallet creation and token balance retrieval (ETH,
USDC, USDT).
Tailwind Styled Comp. • Implemented the Rain card application flow, including KYC data sharing and
ARCHITECTURE application submission with idempotency handling.

Feature-Sliced Design Frontend Software Engineer · Aventus IT Apr 2024 — Jul 2026
• Designed and delivered client-facing and internal business applications using
Turborepo Monorepo
React, TypeScript, Redux Toolkit, and Material UI.
Component-Driven UI • Integrated Apple Pay and Google Pay payment gateways, expanding checkout
options and reducing friction for end users.
BACKEND
• Built responsive, SEO-optimized landing pages that improved organic visibility and
NestJS REST API accelerated page load performance.
• Architected reusable UI component libraries, cutting development time for new
WebSocket JWT (RS256)
features and ensuring visual consistency across products.
Firebase Auth HMAC • Optimized application performance via code-splitting, memoization, and bundle
analysis for smoother experiences on low-end devices.
DATABASES
• Partnered with designers, backend engineers, and product managers to translate
PostgreSQL Prisma business requirements into data-driven features.
TESTING Frontend Software Engineer · PrivatBank Aug 2022 — Apr 2024
Jest Playwright • Led migration of legacy JavaScript/jQuery to modern React + TypeScript,
improving maintainability, type safety, and developer velocity.
Storybook
• Developed and shipped new banking features while supporting and refactoring
INTEGRATIONS existing functionality based on evolving client requirements.
• Delivered reliable, production-ready solutions in a high-load financial
Sumsub KYC Crossmint
environment using JavaScript, TypeScript, React, and Redux.
Rain API Apple/Google Pay • Collaborated with cross-functional teams (backend, QA, product) to ensure
seamless integration and timely delivery of releases.
TOOLS
• Authored technical specifications for IT projects, aligning engineering deliverables
Git Swagger Docker with business objectives and stakeholder expectations.
Claude Code Copilot Project Manager · PrivatBank Nov 2020 — Aug 2022
• Managed end-to-end processing of payment cases, streamlining workflows and
boosting operational efficiency.
• Analyzed payment recipient databases using dashboards and statistical models
to surface actionable insights for leadership.
• Led initiatives to enhance the bank's software systems and payment services,
driving measurable improvements in service quality.